Penacook Lower Falls
Hydro power plant in Merrimack County, New Hampshire. 4.6 MW of nameplate capacity across 1 generator, operated by Briar-Hydro Associates.
Also known as Penacook Lower Falls Power Station · EIA plant 50353
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4.6 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- August 1983First generator online
- Operator
- Briar-Hydro AssociatesEIA operator ID 24793
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Merrimack County, NH43.2858, −71.5950
- EIA plant ID
- 50353EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Penacook Lower Falls produces
Free · EIA-923Net generation, 2025
16.1 GWh
16,050 MWh, final
Capacity factor, 2025
39.8%
2024: 41.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
14.5–23.5
GWh a year. Low 2016, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 12,040 | Not reported | 12 of 12 |
| 2002 | 16,317 | Not reported | 12 of 12 |
| 2003 | 22,847 | Not reported | 12 of 12 |
| 2004 | 21,017 | Not reported | 12 of 12 |
| 2005 | 23,961 | Not reported | 12 of 12 |
| 2006 | 27,982 | Not reported | 12 of 12 |
| 2007 | 18,277 | Not reported | 12 of 12 |
| 2008 | 26,268 | Not reported | 12 of 12 |
| 2009 | 27,173 | Not reported | 12 of 12 |
| 2010 | 17,122 | 42.5% | 12 of 12 |
| 2011 | 27,608 | 68.5% | 12 of 12 |
| 2012 | 19,082 | 47.2% | 12 of 12 |
| 2013 | 20,199 | 50.1% | 12 of 12 |
| 2014 | 24,388 | 60.5% | 12 of 12 |
| 2015 | 17,577 | 43.6% | 12 of 12 |
| 2016 | 14,523 | 35.9% | 12 of 12 |
| 2017 | 22,124 | 54.9% | 12 of 12 |
| 2018 | 17,911 | 44.4% | 12 of 12 |
| 2019 | 19,010 | 47.2% | 12 of 12 |
| 2020 | 16,494 | 40.8% | 12 of 12 |
| 2021 | 23,484 | 58.3% | 12 of 12 |
| 2022 | 18,588 | 46.1% | 12 of 12 |
| 2023 | 22,597 | 56.1% | 12 of 12 |
| 2024 | 16,635 | 41.2% | 12 of 12 |
| 2025 | 16,050 | 39.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 4.6 | August 1983 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Briar-Hydro Associates as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Penacook Lower Falls
More plants operated by Briar-Hydro Associates
Questions about Penacook Lower Falls
How much power does Penacook Lower Falls produce?
Penacook Lower Falls reported 16,050 MWh (16.1 GWh) of net generation in 2025, a 39.8% capacity factor on 4.6 MW of nameplate capacity.
Where is Penacook Lower Falls?
Penacook Lower Falls is in Merrimack County, New Hampshire, at 43.2858, −71.5950. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Penacook Lower Falls?
EIA-860M for August 2026 lists Briar-Hydro Associates as the operator (EIA operator ID 24793). The operator is not always the owner.
When did Penacook Lower Falls start operating?
Its first generator began operating in August 1983, according to EIA-860M.
Does InfraMap have power prices for Penacook Lower Falls?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Penacook Lower Falls, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page